380 citations · 1.3k across the 33 of their papers we have counts for
4 papers · 1 filter
Implications of the nanoHertz Gravitational-Wave Background for Galactic Feedback and Massive Black Hole Growth
Megan Taylor Tillman, Blakesley Burkhart, Chiara M. F. Mingarelli +5
We investigate how pulsar timing array (PTA) measurements of the nanoHertz gravitational-wave background (GWB) can constrain models for the growth history of supermassive black hol…
Discovery and Characterization of Galactic-scale Dual Supermassive Black Holes Across Cosmic Time
Yue Shen, J. Andrew Casey-Clyde, Yu-Ching Chen +10
The hierarchical structure formation paradigm predicts the formation of pairs of supermassive black holes in merging galaxies. When both (or one) members of the SMBH pair are unobs…
UGC 4211: A Confirmed Dual Active Galactic Nucleus in the Local Universe at 230 pc Nuclear Separation
Michael J. Koss, Ezequiel Treister, Darshan Kakkad +23
We present multi-wavelength high-spatial resolution (~0.1'', 70 pc) observations of UGC 4211 at z=0.03474, a late-stage major galaxy merger at the closest nuclear separation yet fo…
The NANOGrav 12.5-year Data Set: Bayesian Limits on Gravitational Waves from Individual Supermassive Black Hole Binaries
Zaven Arzoumanian, Paul T. Baker, Laura Blecha +75
Pulsar timing array collaborations, such as the North American Nanohertz Observatory for Gravitational Waves (NANOGrav), are seeking to detect nanohertz gravitational waves emitted…